LAS VEGAS, NV – MARCH 05: Kevin Harvick, driver of the #4 Jimmy John’s Chevrolet, stands in the garage area during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. (Photo by Chris Trotman/Getty Images)

LAS VEGAS, NV – MARCH 05: Kasey Kahne, driver of the #5 Farmers Insurance Chevrolet, stands in the garage area during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. (Photo by Chris Trotman/Getty Images)

LAS VEGAS, NV – MARCH 05: Kyle Busch, driver of the #18 M&M’s 75 Toyota, drives through the garage area during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. (Photo by Robert Laberge/Getty Images)

during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

LAS VEGAS, NV – MARCH 05: Danica Patrick, driver of the #10 Nature’s Bakery Chevrolet, stands in the garage area during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. (Photo by Chris Trotman/Getty Images)

during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

LAS VEGAS, NV – MARCH 05: Jimmie Johnson, driver of the #48 Kobalt Chevrolet, sits in his car during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. (Photo by Todd Warshaw/Getty Images)

Kurt Busch (Photo by Robert Laberge/Getty Images)

LAS VEGAS, NV – MARCH 05: Carl Edwards, driver of the #19 Arris Toyota, signs autographs for fans in the garage area during practice for the NASCAR Sprint Cup Series Kobalt 400 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. (Photo by Robert Laberge/Getty Images)

during the NASCAR Xfinity Series Boyd Gaming 300 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

during the NASCAR Xfinity Series Boyd Gaming 300 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

during the NASCAR Xfinity Series Boyd Gaming 300 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

LAS VEGAS, NV – MARCH 05: A memorial plaque is seen outisde of turn two for Dan Wheldon during the NASCAR Xfinity Series Boyd Gaming 300 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. Wheldon lost his life after crashing into the fence during a race on October 16, 2011. (Photo by Todd Warshaw/Getty Images)

LAS VEGAS, NV – MARCH 05: A memorial plaque is seen outisde of turn two for Dan Wheldon during the NASCAR Xfinity Series Boyd Gaming 300 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada. Wheldon lost his life after crashing into the fence during a race on October 16, 2011. (Photo by Todd Warshaw/Getty Images)

during the NASCAR Xfinity Series Boyd Gaming 300 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.

during the NASCAR Xfinity Series Boyd Gaming 300 at Las Vegas Motor Speedway on March 5, 2016 in Las Vegas, Nevada.